Mi-Tube User Manual - Fatman

Mi-Tube Hybrid Valve 28 watt Amplifier with Bluetooth
Mi-Tube User Manual

Contents
Safety instructions 3
Amplifier connections 4
Speaker connections 4
Connecting via Bluetooth 5
Controls 6
Fault Finding 7
Specifications 8
Service 8
Mi-Tube Hybrid Valve 28 watt Amplifier with Bluetooth
Mi-Tube User Manual

Safety Instructions
They’re Important, So Please Read Carefully !
Please Do…
Keep these instructions in a safe place for future reference – you may need them.
The Mi-Tube should be used on a clean, dry & flat surface.
Mi-Tube Hybrid Valve 28 watt Amplifier with Bluetooth
Mi-Tube User Manual
Mi-Tube needs room to breathe, so make sure its new home has adequate ventilation. Don’t put it on beds, sofas, rugs, enclosed
bookcases, cabinets or anywhere that ventilation may be obstructed and it can overheat.
Make sure that your Mi-Tube is connected to the correct power supply as indicated on the unit.
Unplug your Mi-Tube when it’s not in use for a long period (we’re taking days not hours).
Always make sure cables are placed safely.
If you move your Mi-Tube from a cool to warm place, condensation may form on the surface of the vacuum tube. It’s nothing to worry
about, but allow 1 hour before you switch it on again. This will avoid leakage or a blowout of the vacuum tube due to too much sudden
heat.
You should have your Mi-Tube serviced by a qualified service engineer if;
Please Don’t…
The power cord is damaged
The unit is dropped or struck by a falling object
It’s exposed to rain or moisture
Liquid is spilt on it
It’s not operating normally or shows a sudden change in performance
Don’t put your Mi-Tube anywhere near water including bathtubs, sinks, washing machines, swimming pools, saunas, Jacuzzis, kettles etc.
Don’t expose it to direct sunlight or to extremes of temperature or humidity.
Don’t leave it near direct heat sources such as radiators, stoves, gas fires, naked flames or candles.
Don’t drop the unit, it’s delicate, don’t apply excessive force to the controls or place heavy objects on it.
Don’t let too much dust gather on the unit, give it a regular wipe with dry cloth if necessary. Do not use solvents.
Mi-Tube has vacuum tubes which can get hot. Don’t touch the tubes and keep away from babies & children.
Don’t try to remove the cover or back panel – there are no user serviceable parts inside and danger of electric shock.
NOTE: Any unauthorised changes or modifications to this equipment render the manufacturers warranty void.
Page 3

Amplifier Connections
Mi-Tube Hybrid Valve 28 watt Amplifier with Bluetooth
Mi-Tube User Manual
Before connecting anything to or from your Mi-Tube, switch OFF the power to the Mi-Tube and to the components you want to connect.
Make sure that all connections between the Mi-Tube and other components are made correctly, L (left) goes to L & R (right) goes to R.
Don’t forget to refer to the owners manual of each component that you want to connect.
Speaker Connections
Connect to your speakers using quality speaker wire.If your speaker wires are not connected properly you may hear no sound at all, or if
the wires are mixed up it will sound weird with a disturbing loss of bass.
When using bare speaker wires, fit at least 1.6mm of insulation inside the speaker terminals so there’s no bare wire showing.
Any speakers you connect should have an impedance of 4-8 ohms - if it’s not written on the back of the speaker contact the manufacturer.
Make sure the wire holders are firmly screwed in, to stop the wires from becoming loose. If wires touch the speakers or the unit could be
damaged.
Always turn OFF the power switches when you’re connecting or disconnecting from the mains.
Disconnect from the mains if you’re not planning to use your Mi-Tube for a while eg. Holidays
Page 4

Blue tooth Connection
Mi-Tube Hybrid Valve 28 watt Amplifier with Bluetooth
Mi-Tube User Manual
Mi-Tube plays wirelessly with compatible Bluetooth enabled Smartphones, Net Books, Laptops & Computers
Turn Mi-Tube on
Select Bluetooth on left hand input selector switch
Select Bluetooth on your audio source eg. Smartphone, lap top etc.
After a short time Fatman will appear on your audio source screen. Select pair
Mi-Tube will now be ready to play your music wirelessly within a range of approximately 30 ft.
The range can vary depending on other wireless signals in the room.
Page 5

Controls & connections: Mi- Tube: Front & Back
Mi-Tube Hybrid Valve 28 watt Amplifier with Bluetooth
Mi-Tube User Manual
Input Select (left): Bluetooth, Line 1 or Line 2 Volume Control (right)
Connections: Mains switch, Mains input socket & fuse, Speaker outputs L&R, Line Inputs 1& 2 Page 6

Fault Finding
Won’t turn on when the
POWER switch is pressed
Mi-Tube Hybrid Valve 28 watt Amplifier with Bluetooth
Mi-Tube User Manual
Power cable isn’t connected properly, mains
supply is off
No sound The volume control is turned all the way to the
left
The connection wires are not connected
securely to the Input terminals
Speakers are not connected properly
No sound from left or right speaker One or both speakers are not properly
connected
The acoustic image is unstable (sounds
unnatural or weirdly bass light)
The positive and negative polarities of the unit
and speakers aren’t matched
Crackling sound from speakers Bad connection
A problem with your audio source
Sound is distorted Volume level on Mi-Tube is too high
Sound source is distorted
Radio interference You may be too close to a radio tower
Make sure the power cable is firmly
plugged in ands mains is switched
on
Turn the control to the right to crank
up the volume
Make sure the cords are fully
inserted at both ends
Check that the speaker cables are
connected correctly
Check both speaker cables and
ensure they’re connected securely
Check the connections between
your source and amplifier are
correctly and firmly connected
Remove the speaker cable and
connect them correctly
Check connections
Check audio source
Turn it down a bit
WAV & MIDI files are often poor
quality and distortion sounds worst
through a quality system – try a
different audio source
Try moving the speakers to a
different position
Page 7

Specification
Max output power: 28W x 2
Frequency response: 20Hz-20Khz (+/- 1.0d)
Distortion: 0.5%
Signal to Noise Ratio: 86db
Input sensitivity: 300mV
Input impedance: 100k Ohm
Output impedance: 4/8 Ohm
Amp Size: Diameter 183mm: Height 145mm
Weight: 4.kg
Type of amp: Hybrid
Inputs: RCA pr x 2
Service:
Please contact your local authorised dealer or reseller
Available in High Gloss Black or White
Mi-Tube Hybrid Valve 28 watt Amplifier with Bluetooth
Mi-Tube User Manual
Page 8